Malicious PDF — malware analysis report

Static analysis result for SHA-256 9cc4811b340f29b7…

MALICIOUS

PDF

43.6 KB Created: 2021-06-03 09:21:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 95770e75b2efc79384dfb3e6afe0e17f SHA-1: e7b0a4c8c46c07860febe372a6196f2223d6461a SHA-256: 9cc4811b340f29b77882fca4db55fa7a983a8a89c9c42ddf38608bcc5e546ae6
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to known malicious redirectors, masquerading as "free generators" or "game hacks". The ML classifier also flagged this document as malicious. The embedded URLs likely lead to further malicious content or phishing pages, aiming to deceive the user into a harmful action.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://netcdn.online/app/406889139/static-moonactive-net-game-hack In PDF document text
    • http://www.library.umbjm.ac.id/repository/free-minecraft-hosting_GM479516143.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/spins-gratis-coin-master-hoy_GM406889139.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/hacks-para-roblox_GM431946152.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/free-robux-just-click_GM431946152.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/coin-master-online-hack-no-human-verification_GM406889139.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/how-to-get-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/how-to-get-free-roblox-money_GM431946152.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/inappropriate-roblox_GM431946152.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/free-robux-discord-servers_GM431946152.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/archery-master-3d-unlimited-coins-hack_GM406889139.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/bux-free-robux_GM431946152.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/hack-version-of-coin-master-apk-download_GM406889139.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/minecraft-bedrock-hacks_GM479516143.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/online-coin-master-hack-here_GM406889139.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/free-spins-on-coin-master-game_GM406889139.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/minecraft-hacked-client-download_GM479516143.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/coin-master-unlimited-spin-and-coin-hack_GM406889139.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/minecraft-ore-finder-mod_GM479516143.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/how-to-get-minecraft-pocket-edition-for-free_GM479516143.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/free-coins-and-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000052eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x52EB 24052 bytes
SHA-256: aeeeec6699a912566fc6b08e735e1dfd1d3fb849dbf0cd943e5e2c9766089309
font_01_sfnt_off00008982.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8982 17660 bytes
SHA-256: 6b7ab008261f630dc22e15b5ef3c221448b4794aa8c3d363ebd414377ccf7e51

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